Hy doesn't have linked lists or tail call optimisation, but it has pretty cool bidirectional interop, i.e. you can write Python in Lisp, and also you can just import Hy modules into existing Python code, and even use the Python debugger for Lisp code.

I personally find the Python syntax super annoying; the colons after `if` and `else`, the `@` decorator syntax, its whitespace sensitivity, all the __underscores__, etc., so it's nice that someone are doing for Python what Clojure is doing for Java.